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An operational distinction between quantum entanglement and classical non-separability

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Authors: Natalia Korolkova, Luis Sánchez-Soto, Gerd Leuchs

Year

2024

Paper ID

13905

Status

Peer-reviewed

Abstract Read

~2 min

Abstract Words

74

Citations

8

Abstract

Quantum entanglement describes superposition states in multi-dimensional systems—at least two partite—which cannot be factorized and are thus non-separable. Non-separable states also exist in classical theories involving vector spaces. In both cases, it is possible to violate a Bell-like inequality. This has led to controversial discussions, which we resolve by identifying an operational distinction between the classical and quantum cases. This article is part of the theme issue ‘The quantum theory of light’.

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  • This paper contributes to the Quantum Foundations research area in the Quantum Articles archive.
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  • Quantum entanglement describes superposition states in multi-dimensional systems—at least two partite—which cannot be factorized and are thus non-separable.

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Current Paper #13905 #78817 Modelling Josephson Junctions w... #78814 Construction of isoscattering n... #78811 Autonomous Code Migration for Q... #78808 Experimental generation of asym...

External citation index: OpenAlex citation signal • updated 2026-11-04 00:26:38

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